How to change FlexScript node function

Hi all,
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Does anyone knows how to change a FlexScript node function from a user command. Specifically I need to change the "Request Transport From" of the "Flow page".>>
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What I’m trying to do is to make a command that creates a model based on global tables, and to set up that model i need to change the mentioned FlexCript variable.>>

Thanks,

LEQ.

Use setvarstr, getvarnode and buildnodeflexscript.